/*
 * Copyright (c) 2006 Sebastian Dröge <slomo@circular-chaos.org>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

using System;
using System.Reflection;
using System.Collections.Generic;

using NDesk.DBus;
using org.freedesktop;
using org.freedesktop.DBus;

namespace Notifications {
    [Interface("org.freedesktop.Notifications")]
    internal interface INotifications: Introspectable, Properties {
        ServerInformation ServerInformation { get; }
        string[] Capabilities { get; }
        void CloseNotification(uint id);
        uint Notify(string                      app_name,
                    uint                        id,
                    string                      icon,
                    string                      summary,
                    string                      body,
                    string[]                    actions,
                    IDictionary<string, object> hints,
                    int                         timeout);
        event NotificationClosedHandler NotificationClosed;
        event ActionInvokedHandler      ActionInvoked;
    }

    internal delegate void NotificationClosedHandler(uint id);
    internal delegate void ActionInvokedHandler(uint id, string action);

    public struct ServerInformation {
        public string Name;
        public string Vendor;
        public string Version;
        public string SpecVersion;
    }

    public static class Global {
        private const string interface_name = "org.freedesktop.Notifications";
        private const string object_path    = "/org/freedesktop/Notifications";

        private static INotifications dbus_object      = null;
        private static object         dbus_object_lock = new object();

        static internal INotifications DBusObject {
            get {
                if (dbus_object != null) {
                    return dbus_object;
                }

                lock (dbus_object_lock) {
                    if (!Bus.Session.NameHasOwner(interface_name)) {
                        Bus.Session.StartServiceByName(interface_name);
                    }

                    dbus_object = Bus.Session.GetObject<INotifications>(interface_name, new ObjectPath(object_path));
                    return dbus_object;
                }
            }
        }

        public static string[] Capabilities {
            get { return DBusObject.Capabilities; }
        }

        public static ServerInformation ServerInformation {
            get { return DBusObject.ServerInformation; }
        }
    }
}
